Kiwi scratchbuilt - Page 8

Scott Calabro · 01-02-08, 07:03 PM

Russ,

Your perseverance never ceases to amaze me!

Top Shelf.

Cheers,
Scott

Russ Noble · 01-30-08, 04:33 AM

I have started playing around with fitment for the dry sump pump, waterpump and alternator which will all be mounted on the front motor plate. And the belt layout, pulleys etc.

First up it's obvious the brand new waterpump is miles too long. Time to turn it into a Kiwi shorty. So, strip it out and see what scope there is for shortening. This is what we started off with, 6.137" long.

Russ Noble · 01-30-08, 04:46 AM

Well, not too bad. There's scope to trim it back by 1.25" which will be just about right. The bearing can go rearwards in the housing. The seal and impeller can be pressed forwards to maintain their positions relative to the housing and the nose of the housing and the front and rear of the bearing shaft can be shortened up to suit. QED. Finished length 4.890". In actual fact, if I'd needed to, I could have trimmed it back another 1/8''.

Russ Noble · 01-30-08, 04:57 AM

All ready to go together. As a little bit of added security I decided to locate the bearing with a 3mm grub screw engaging the existing groove in the bearing. The screw shows up better in the flash shadow than it does on the actual pump. I also took the opportunity on reassembly to close up the impeller to housing clearance. I have never liked the big gaps found in most factory waterpumps. Final overall length of the pump to the front of the shaft 4.9". This means I won't need to put a power bulge in the firewall to enable clearance for the pump or for belt replacement. Sweet!

Not bad considering the extra length that Porsche have in the 930 from the driveshafts forwards and the extra 10mm that the motor plate spaces the pump forwards.

Nicholas Gomez · 01-31-08, 10:02 PM

Keep it up! Excellent effort.

Richard Martin-Beck · 02-11-08, 07:31 PM

G'day Russ,
Thanks for the help in contacting Jonathon - I've now sent eight emails to him, all returned undelivered.
Thanks also for the original attention to Jonathon in the first place.
I've read your build notes above and looked at the photos. Great work. Good luck with the rest, I'll now follow your postings and take delight in your progress.
Richard Martin-Beck

Russ Noble · 03-22-08, 04:50 AM

Not a lot to show the last few weeks, I've been tied up with work a bit more than usual. All the major mechanicals are in bits as I recondition, blueprint, modify, and assemble/reassemble. I have been playing around with the transaxle in recent weeks. Details are on this thread in the transaxle section.

Adjusting 930 LSD power/overrun split.

Trans is on the way back together shortly, once we've built the setup tools.